2f2ddce642d0c5f30d7d7419d186a77949ba62d8a1e3764521f9e7055868bd4e

Analysis

max time kernel
150s
max time network
156s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
23-02-2024 15:49

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General

Target

2024-02-23_e511c9473509bb76773d71cb45a4cc36_cryptolocker.exe
Size

62KB
MD5

e511c9473509bb76773d71cb45a4cc36
SHA1

7ecf2874a2259bd68c97d58bf97243bad6540dcd
SHA256

2f2ddce642d0c5f30d7d7419d186a77949ba62d8a1e3764521f9e7055868bd4e
SHA512

5ea81762f58ca5be4dac19b300b7ad3a7d0916831c7939686c469af94ab50d5f00ad460854ab7db411c3d830683a5a865aa3bfa44cbfd397f3281e47ed215d87
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF293O:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7w

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x0009000000012261-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x0009000000012261-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2288	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
1092	2024-02-23_e511c9473509bb76773d71cb45a4cc36_cryptolocker.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
1092	2024-02-23_e511c9473509bb76773d71cb45a4cc36_cryptolocker.exe
2288	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1092 wrote to memory of 2288	1092	2024-02-23_e511c9473509bb76773d71cb45a4cc36_cryptolocker.exe	28
PID 1092 wrote to memory of 2288	1092	2024-02-23_e511c9473509bb76773d71cb45a4cc36_cryptolocker.exe	28
PID 1092 wrote to memory of 2288	1092	2024-02-23_e511c9473509bb76773d71cb45a4cc36_cryptolocker.exe	28
PID 1092 wrote to memory of 2288	1092	2024-02-23_e511c9473509bb76773d71cb45a4cc36_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-23_e511c9473509bb76773d71cb45a4cc36_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-23_e511c9473509bb76773d71cb45a4cc36_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1092
- C:\Users\Admin\AppData\Local\Temp\hurok.exe
  "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:2288

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\hurok.exe

Filesize
62KB

MD5
f6fb95b656725d2f670a050da74e9a3b

SHA1
5bb5c47356dcb94fa77acb8ed484506328082a7e

SHA256
8fa234818378fb7c7449f487c9b23088126c8454db313d5c2f708918adf51e17

SHA512
03d8ddc51b1616351f4bfa57d59a9d5008b5a3aa10eb4dd6845f11dcc50f0475999618c565c4ed8d3530d804bf6136d5ceaa9029faf586322147f8d1eb14052a

Download Submit
memory/1092-0-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/1092-1-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/1092-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2288-23-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download